Lightweight Speed Rope Skipping Jump Rope for Endurance Training Sports like Crossfit ,MMA, Boxing or Other Body Training (Black,Handle Size: 11.7CM) INDUSTRIAL GRADE STEEL: Adopts 48 core industrial steel wire with TPU coat, which makes it twist and kink resistant, and helps increase reliability, speed and endurance. METAL BEARINGS: Increase the rotational speed of the rope for longer life. NON-SLIP LONG HANDLE: Excellent feeling with the non-slip high strength handle, let you enjoy the every jump movement. EASILY PORTABLE :Lightweight & Compact. Ensures Extremely Fast Spinning and No Kinking, Tangling or Bending like the usual PVC and Leather Ropes. ADJUSTABLE BUCKLE: Adopts buckle easy to adjust the length of the rope.